What are these biology terms (PLZ HELP)?

Question

dynamic equilibrium
recombination of chromosomes

Plz make the definitions has basic has possible
Any help,much appreciated

Answer 1

A dynamic equilibrium occurs when two reversible processes occur at the same rate. Many processes (such as some chemical reactions) are reversible and when at dynamic equilibrium the forward reaction will occur at the same rate as the reverse reaction such that there is no further change in concentration of reactants or products.The term also has applications across a wide range of disciplines. While it may be applied to less physical systems in these fields, it still relates to a stable situation maintained by balancing processes. For example: in economics it may be used to refer to the constant flux of capital in otherwise stable markets; in ecology, an unchanging population of organisms results from the balancing of birth rate against death rate.

This term can also be used to refer to a steady state (i.e., a state which isn't a true equilibrium, but does not change with time). This can only happen if the system is in contact with an environment which is not in equilibrium.

Genetic recombination is the process by which a strand of DNA is broken and then joined to the end of a different DNA molecule. In eukaryotes recombination commonly occurs during meiosis as chromosomal crossover between paired chromosomes. This process leads to offspring having different combinations of genes from their parents and can produce new chimeric alleles. In evolutionary biology this shuffling of genes is thought to have many advantages, including that of allowing sexually reproducing organisms to avoid Muller's ratchet. However, a recombination pathway in DNA is any way by which a broken DNA molecule is reconnected to form a whole DNA strand.

In molecular biology "recombination" can also refer to artificial and deliberate recombination of disparate pieces of DNA, often from different organisms, creating what is called recombinant DNA.

Enzymes called recombinases catalyze natural recombination reactions. RecA, the recombinase found in E. coli, is responsible for the repair of DNA double strand breaks (DSBs). In yeast and other eukaryotic organisms there are two recombinases required for repairing DSBs. The RAD51 protein is required for mitotic and meiotic recombination and the DMC1 protein is specific to meiotic recombination.

Answer 2

Andrmeda's answer is good and thorough. Here's a simple example of dynamic equilibrium for you, though, just to make the point more clear:
You have $100.00 in January. In February, you get $200.00, but you spend $200.00. You still have $100. In March, you get $300, but you spend $300. You still have $100. Each month you get a certain amount of money, but you spend exactly that much money, so at the end of the month you have that same $100 left. You could say that your finances are in "dynamic equilibrium". The particular amount of change in each direction (income vs. expense) has varied, but the end result stays the same.